I don't know the brand I have because my stuff is all boxed up, but I did see them the other day there for $14.95! As a teacher from AZ I have to say, get a metal fan because they move the air faster and it will make a difference! I'm telling you... people will be coming to your room after duty!
Hop on over to I Love To Teach to see other wys to Stay Cool for School! Lots of really great ideas!